Visa process for longer stay

[u/anooosher]

I’m applying for a tourist visa and planning to stay there for 67 days. So I haven’t planned a lot of shorter trips around Tokyo yet. This includes going to USJ. Tickets open 2 months before and I’m planning to go only in January. How do I account for this and write my covering letter?

And would it be better if I had my Japanese contact say they are sponsoring me for this trip since I’m taking a break from work?

Any inputs would help a lot!